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Milawu ya ku ringanisa movha wa gezi na inertia eka ti robot actuators

Mavonelo

14 min read Via robot-daycare.com

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Editorial Team

Hacker News

Milawu ya Xikalo xa Movha wa Gezi na Inertia eka Switirhisiwa swa Tirhoboto

Eka ku hlongorisa ku tumbuluxa tirhoboto leti nga na vutshila, ta matimba, na ku tirha kahle, ku hlawuriwa na dizayini ya xitirhisiwa xa gezi xa movha i swa nkoka swinene. Hambiswiritano, ku hlawula ntsena movha lowu nga ni matimba swinene a hi ndlela yo kongoma yo tirha hi ndlela yo antswa. Vanjhiniyara va lawuriwa hi milawu ya xisekelo ya milawu ya ku ringanisa na nkucetelo wa nkoka wa rotor inertia. Swilo leswi swa xiviri swi lawula ndlela leyi matirhelo ya motor ma cincaka ha yona hi vukulu ni leswaku ha yini ku hlamula ka robot hakanyingi ku hlamuseriwa hi leswi rhendzelekaka endzeni ka mahlangano ya yona. Ku twisisa ku tirhisana loku i xilotlelo xo dizayina tirhoboto leti nga riki na matimba ntsena, kambe ti tlhela ti hatlisa, leti kongomeke, na ku tirhisa eneji hi ndlela leyinene. Eka mabindzu lama hlanganisaka tisisiteme ta tirhoboto, vutivi lebyi i bya nkoka swinene eka ku boxa swilaveko na ku lawula xirhendzevutani xa vutomi bya nhundzu ya vona ya xiothomethi, nchumu lowu pulatifomo yo fana na Mewayz yi nga pfunaka ku okhestra hi ku hlanganisa datha ya vunjhiniyara na vufambisi bya matirhelo.

Nawu wa Xikhubiki-Xikwere: Ha yini Timovha Letitsongo Ti Ri Na Matimba

Ti motor ta gezi ti yingisa nsinya wa xisekelo wa scaling lowu talaka ku vuriwa "cube-square law." Nawu lowu wu vula leswaku loko vukulu bya motor byi tlakuka hi linear, vuhumelerisi bya yona bya torque (lebyi fambelanaka na volume ya yona na matimba ya magnetic eka gap ya yona ya moya) byi ringanisa kwalomu ka cube ya dimension ya yona. Hi nkarhi walowo, vuswikoti bya yona byo hangalasa kuhisa (hiku tirhisa ndzhawu ya yona yale henhla) byi ringanisa ntsena na xikwere. Leswi swi ni vuyelo lebyikulu. Motor lowu nga wukulu kambirhi eka dimension yin’wana na yin’wana wunga humesa kwalomu ka torque leyi phindhiweke ka tsevu kambe yina ndzhawu yale henhla leyi phindhiweke ka mune ntsena leswaku yita titimela. Hikwalaho, ti motor letikulu titala kuva na torque-rich kambe thermally limited, ati koti ku hlayisa nhlohlorhi ya tona ya vuhumelerisi kuringana nkarhi woleha handle ko hisa ngopfu. Ti motors letintsongo, hiku hambana, titala ku susumetiwa swinene loko ti pimanisiwa na vukulu bya tona, ti fikelela ti power densities tale henhla kambe hiku durha matimba lawa ya heleleke.

Rotor Inertia: Voko leri Fihliweke eka Nhlamulo ya Dynamic

Ku tlula raw torque, matirhelo ya dynamic ya nhlangano wa robotic ya titshege swinene hi motor’s rotor inertia. Lexi i mpimo wa leswaku swi tika ku fikela kwihi ku cinca rivilo ro rhendzeleka ra nhlayo ya ku rhendzeleka ka movha. Rotor ya high-inertia yitirha kufana na flywheel, yi lwisana na ku hatlisa hiku hatlisa naku hunguta rivilo. Eka robot actuator, inertia leyi yi kombisiwa eka vuhumelerisi hiku tirhisa square ya gear ratio, leswi khumbhaka swinene ku hatlisa ka sisiteme. Mintlhontlho ya nkoka leyi vangiwaka hi rotor inertia yale henhla yi katsa:

  • Ku hungutiwa ka Bandwidth: Sisiteme yi hlamula hi ku nonoka eka swikombiso swa swileriso, leswi hungutaka ku kongoma eka mintirho ya rivilo lerikulu.
  • Ku Engetela Ku Tirhisa Eneji: Eneji yo tala ya tlangisiwa hi ku hatlisisa na ku hunguta rivilo ra movha hi woxe.
  • Ku Lawula Matimba yo Biha: Swi ya swi tika ku lawula matimba ya ku khumbana lama nga na vuxiyaxiya, tanihileswi inertia yi engetelaka ku hlwela na ku nga tshamiseki.
  • Reflected Inertia: Hi ku tirhisa gearing, inertia ya motor hi yoxe yi nga lawula total inertia leyi twiwaka eka nhlangano, yi fihla inertia ya ndzhwalo na ku hunguta ku twisisa.

Maendlelo ya Dizayini ya ku Tirhisa lokunene

Ku hlula mintlhontlho leyi ya ku ringanisa na ku nga tirhi, vativi va tirhoboto va tirhisa tindlela to hlayanyana ta nkoka. Ku tirhisa ti rare-earth magnets ta matimba swinene swipfumelela torque leyikulu eka phasela lerintsongo, leswi susumetaka ku lwisana na swipimelo swa mahiselo. Maendlelo ya xiyimo xale henhla yo kufumeta, kufana na liquid cooling kumbe hollow rotor shafts, ya engetela ku hangalaka ka kuhisa. Lexi nga xa nkoka swinene, ku tirhisiwa ka tipulani ta ti- rotor leti nga riki na matimba swinene—hakanyingi ti lehe ni to olova ematshan’weni yo koma ni ku nona—i swa nkoka eka switirhisiwa leswi cinca-cincaka. Laha hi laha thekinoloji yofana na direct-drive kumbe quasi-direct-drive motors yi voningaka kona, leswi hungutaka gearing ku papalata ku kurisa motor inertia. Hambiswiritano, leswi switala ku lava ku amukela torque yale hansi ya nhlohlorhi, leswi yisaka eka classic engineering trade-off. Ku lawula ku cinca loku eka ntlawa wa tirhoboto swi lava matsalwa ya vukheta na ku landzelerisa swiboho. Lowu hi wona muxaka wa nhlanganiso wo tsemakanya swiyenge lowu Mewayz a wu fambisaka, ku tiyisisa leswaku swipimelo swa ku hlawula actuator swi fambelanisiwa kahle na timetriki ta matirhelo ya misava ya xiviri na tixedulu ta vuhlayiseki.

Mahetelelo: Nawu wo ringanisela wa ku hatlisa ka tirhoboto

Ku lavisisa xitirhisiwa xa robot lexi hetisekeke i xiendlo xo ringanisela exikarhi ka torque, vulawuri bya ku hisa, na inertia. Milawu ya scaling yi hi tsundzuxa leswaku kukulu a hi minkarhi hinkwayo swi antswaka, naswona vulawuri bya tihanyi bya rotor inertia byi lerisa leswaku ndlela yo ya eka rivilo na ku kongoma hakanyingi yi le ku endleni ka leswaku motor’s spinning core yi olova no hatlisa hilaha swi nga kotekaka hakona. Loko tirhoboto ti ri karhi ti hangalaka eka tiindasitiri ku suka eka vumaki ku ya eka vutleketli, ku hlawuriwa ka actuator ku hlamusela vuswikoti bya sisiteme.

Inertia ya rotor ya motor a hi spec ntsena eka datasheet; i nchumu wun’we lowukulu lowu lawulaka vuswikoti bya nhlangano wa roboti ku tirhisana hi ku hatlisa na hi ndlela ya musa na misava.
Ku fambisa misinya leyi ya milawu leyi rharhanganeke ya nyama ni ya vunjhiniyara hi ku humelela hi swona swi hambanisaka muchini lowu nga riki na vuxiyaxiya ni roboto leyi hatlisaka, leyi humesaka mihandzu. Ku hlanganisa tisisiteme leti eka matirhelo ya bindzu swi engetela leyara yin’wana ya ku rharhangana, laha tipulatifomo to fana na Mewayz ti nyikaka leyara ya nkoka ya matirhelo ku lawula, ku langutisisa, na ku antswisa nhundzu leyi ya xiviri ya xiyimo xa le henhla etlhelo ka maendlelo ya ntirho ya vanhu.

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Swivutiso Leswi Vutisiwaka Nkarhi Na Nkarhi

Milawu ya Xikalo xa Movha wa Gezi na Inertia eka Switirhisiwa swa Tirhoboto

Eka ku hlongorisa ku tumbuluxa tirhoboto leti nga na vutshila, ta matimba, na ku tirha kahle, ku hlawuriwa na dizayini ya xitirhisiwa xa gezi xa movha i swa nkoka swinene. Hambiswiritano, ku hlawula ntsena movha lowu nga ni matimba swinene a hi ndlela yo kongoma yo tirha hi ndlela yo antswa. Vanjhiniyara va lawuriwa hi milawu ya xisekelo ya milawu ya ku ringanisa na nkucetelo wa nkoka wa rotor inertia. Swilo leswi swa xiviri swi lawula ndlela leyi matirhelo ya motor ma cincaka ha yona hi vukulu ni leswaku ha yini ku hlamula ka robot hakanyingi ku hlamuseriwa hi leswi rhendzelekaka endzeni ka mahlangano ya yona. Ku twisisa ku tirhisana loku i xilotlelo xo dizayina tirhoboto leti nga riki na matimba ntsena, kambe ti tlhela ti hatlisa, leti kongomeke, na ku tirhisa eneji hi ndlela leyinene. Eka mabindzu lama hlanganisaka tisisiteme ta tirhoboto, vutivi lebyi i bya nkoka swinene eka ku boxa swilaveko na ku lawula xirhendzevutani xa vutomi bya nhundzu ya vona ya xiothomethi, nchumu lowu pulatifomo yo fana na Mewayz yi nga pfunaka ku wu hlela hi ku hlanganisa datha ya vunjhiniyara na vufambisi bya matirhelo.

Nawu wa Cube-Square: Ha Yini Timovha Letitsongo Ti Ri Na Matimba

Ti motor ta gezi ti yingisa nsinya wa xisekelo wa scaling lowu talaka ku vuriwa "cube-square law." Nawu lowu wu vula leswaku loko vukulu bya motor byi tlakuka hi linear, vuhumelerisi bya yona bya torque (lebyi fambelanaka na volume ya yona na matimba ya magnetic eka gap ya yona ya moya) byi ringanisa kwalomu ka cube ya dimension ya yona. Hi nkarhi walowo, vuswikoti bya yona byo hangalasa kuhisa (hiku tirhisa ndzhawu ya yona yale henhla) byi ringanisa ntsena na xikwere. Leswi swi ni vuyelo lebyikulu. Motor lowu nga wukulu kambirhi eka dimension yin’wana na yin’wana wunga humesa kwalomu ka torque leyi phindhiweke ka tsevu kambe yina ndzhawu yale henhla leyi phindhiweke ka mune ntsena leswaku yita titimela. Hikwalaho, ti motor letikulu titala kuva na torque-rich kambe thermally limited, ati koti ku hlayisa nhlohlorhi ya tona ya vuhumelerisi kuringana nkarhi woleha handle ko hisa ngopfu. Ti motors letintsongo, hiku hambana, titala ku susumetiwa swinene loko ti pimanisiwa na vukulu bya tona, ti fikelela ti power densities tale henhla kambe hiku durha matimba lawa ya heleleke.

Rotor Inertia: Voko leri Fihliweke eka Nhlamulo ya Dynamic

Ku tlula raw torque, matirhelo ya dynamic ya nhlangano wa robotic ya titshege swinene hi motor’s rotor inertia. Lexi i mpimo wa leswaku swi tika ku fikela kwihi ku cinca rivilo ro rhendzeleka ra nhlayo ya ku rhendzeleka ka movha. Rotor ya high-inertia yitirha kufana na flywheel, yi lwisana na ku hatlisa hiku hatlisa naku hunguta rivilo. Eka robot actuator, inertia leyi yi kombisiwa eka vuhumelerisi hiku tirhisa square ya gear ratio, leswi khumbhaka swinene ku hatlisa ka sisiteme. Mintlhontlho ya nkoka leyi vangiwaka hi rotor inertia yale henhla yi katsa:

Maendlelo ya Dizayini ya ku Tirhisa lokunene

Ku hlula mintlhontlho leyi ya ku ringanisa na ku nga tirhi, vativi va tirhoboto va tirhisa tindlela to hlayanyana ta nkoka. Ku tirhisa ti rare-earth magnets ta matimba swinene swipfumelela torque leyikulu eka phasela lerintsongo, leswi susumetaka ku lwisana na swipimelo swa mahiselo. Maendlelo ya xiyimo xale henhla yo kufumeta, kufana na liquid cooling kumbe hollow rotor shafts, ya engetela ku hangalaka ka kuhisa. Lexi nga xa nkoka swinene, ku tirhisiwa ka tipulani ta ti- rotor leti nga riki na matimba swinene—hakanyingi ti lehe ni to olova ematshan’weni yo koma ni ku nona—i swa nkoka eka switirhisiwa leswi cinca-cincaka. Laha hi laha thekinoloji yofana na direct-drive kumbe quasi-direct-drive motors yi voningaka kona, leswi hungutaka gearing ku papalata ku kurisa motor inertia. Hambiswiritano, leswi switala ku lava ku amukela torque yale hansi ya nhlohlorhi, leswi yisaka eka classic engineering trade-off. Ku lawula ku cinca loku eka ntlawa wa tirhoboto swi lava matsalwa ya vukheta na ku landzelerisa swiboho. Lowu hi wona muxaka wa nhlanganiso wo tsemakanya swiyenge lowu Mewayz a wu fambisaka, ku tiyisisa leswaku swipimelo swa ku hlawula actuator swi fambelanisiwa kahle na timetriki ta matirhelo ya misava ya xiviri na tixedulu ta vuhlayiseki.

Mahetelelo: Nawu wo ringanisela wa ku hatlisa ka tirhoboto

Ku lavisisa xitirhisiwa xa robot lexi hetisekeke i xiendlo xo ringanisela exikarhi ka torque, vulawuri bya ku hisa, na inertia. Milawu ya scaling yi hi tsundzuxa leswaku kukulu a hi minkarhi hinkwayo swi antswaka, naswona vulawuri bya tihanyi bya rotor inertia byi lerisa leswaku ndlela yo ya eka rivilo na ku kongoma hakanyingi yi le ku endleni ka leswaku motor’s spinning core yi olova no hatlisa hilaha swi nga kotekaka hakona. Loko tirhoboto ti ri karhi ti hangalaka eka tiindasitiri ku suka eka vumaki ku ya eka vutleketli, ku hlawuriwa ka actuator ku hlamusela vuswikoti bya sisiteme. Rotor inertia ya motor a hi spec ntsena eka datasheet; i nchumu wun’we lowukulu lowu lawulaka vuswikoti bya nhlonge ya roboti byo tirhisana hi ku hatlisa ni hi ndlela ya musa ni misava. Ku fambisa misinya leyi ya milawu leyi rharhanganeke ya nyama ni ya vunjhiniyara hi ku humelela hi swona swi hambanisaka muchini lowu nga riki na vuxiyaxiya ni roboto leyi hatlisaka, leyi humesaka mihandzu. Ku hlanganisa tisisiteme leti eka matirhelo ya bindzu swi engetela leyara yin’wana ya ku rharhangana, laha tipulatifomo to fana na Mewayz ti nyikaka leyara ya nkoka ya matirhelo ku lawula, ku langutisisa, na ku antswisa nhundzu leyi ya xiviri ya xiyimo xa le henhla etlhelo ka maendlelo ya ntirho ya vanhu.

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